复制代码 代码如下:

#coding=utf-8

#对话框

import sys

from PyQt4 import QtGui, QtCore

class Window( QtGui.QWidget ):

def __init__( self ):

super( Window, self ).__init__()

self.setWindowTitle( "hello" )

self.resize( 500, 500 )

gridlayout = QtGui.QGridLayout()

self.AboutButton = QtGui.QPushButton( "About" )

gridlayout.addWidget( self.AboutButton, 0, 0 )

self.AboutQtButton = QtGui.QPushButton( "AboutQt" )

gridlayout.addWidget( self.AboutQtButton, 0, 1 )

self.CriticalButton = QtGui.QPushButton( "CriticalButton" )

gridlayout.addWidget( self.CriticalButton, 1, 0 )

self.InfoButton = QtGui.QPushButton( "Info" )

gridlayout.addWidget( self.InfoButton, 1, 1 )

self.QuestionButton = QtGui.QPushButton( "Question" )

gridlayout.addWidget( self.QuestionButton, 2, 0 )

self.WarningButton = QtGui.QPushButton( "Warning" )

gridlayout.addWidget( self.WarningButton, 2, 1 )

spacer = QtGui.QSpacerItem( 200, 80 )

gridlayout.addItem( spacer, 3, 1, 1, 5 )

self.setLayout( gridlayout )

self.connect( self.AboutButton, QtCore.SIGNAL( 'clicked()' ), self.OnAboutButton )

self.connect( self.AboutQtButton, QtCore.SIGNAL( 'clicked()' ), self.OnAboutQtButton )

self.connect( self.CriticalButton, QtCore.SIGNAL( 'clicked()' ), self.OnCriticalButton )

self.connect( self.InfoButton, QtCore.SIGNAL( 'clicked()' ), self.OnInfoButton )

self.connect( self.QuestionButton, QtCore.SIGNAL( 'clicked()' ), self.OnQuestionButton )

self.connect( self.WarningButton, QtCore.SIGNAL( 'clicked()' ), self.OnWarningButton )

def OnAboutButton( self ):

QtGui.QMessageBox.about( self, 'PyQt', "About" )

def OnAboutQtButton( self ):

QtGui.QMessageBox.aboutQt( self, "PyQt" )

def OnCriticalButton( self ):

r = QtGui.QMessageBox.critical( self, "PyQT", "CriticalButton", QtGui.QMessageBox.Abort,

QtGui.QMessageBox.Retry, QtGui.QMessageBox.Ignore )

if r == QtGui.QMessageBox.Abort:

self.setWindowTitle( "Abort" )

elif r == QtGui.QMessageBox.Retry:

self.setWindowTitle( "Retry" )

elif r == QtGui.QMessageBox.Ignore:

self.setWindowTitle( "Ignore" )

else:

pass

def OnInfoButton( self ):

QtGui.QMessageBox.information( self, "Pyqt", "information" )

def OnQuestionButton( self ):

r = QtGui.QMessageBox.question( self, "PyQt", "Question", QtGui.QMessageBox.Yes, QtGui.QMessageBox.No, QtGui.QMessageBox.Cancel )

def OnWarningButton( self ):

r = QtGui.QMessageBox.warning( self, "PyQT", "warning", QtGui.QMessageBox.Yes, QtGui.QMessageBox.No )

app = QtGui.QApplication( sys.argv )

win = Window()

win.show()

app.exec_()